If it were any state other than Mass I would worry about Snowe or Collins voting with the Dems from time to time, but a GOP win in Mass would give the Maine sens pause before being enticed by the dark side.
Snowe may have played fox in the hen house on this one - she got into the locked door meetings, because the Rats thought they had her on their side, which enabled her to find out just what was going on - listen carefully to what she says in this video -
http://www.cbsnews.com/video/watch/?id=6001489n&tag=contentMain;contentBody